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Commit b144871c authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt
Browse files

powerpc: Initialize TLB and LPID register on HV mode Power7 



In case entry from the bootloader isn't "clean"

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 895796a8

arch/powerpc/kernel/cpu_setup_power7.S

+18 −0
Original line number Diff line number Diff line
@@ -25,7 +25,10 @@ _GLOBAL(__setup_cpu_power7) 
	bl	__init_hvmode_206

	mtlr	r11

	beqlr

	li	r0,0

	mtspr	SPRN_LPID,r0

	bl	__init_LPCR

	bl	__init_TLB

	mtlr	r11

	blr
@@ -34,7 +37,10 @@ _GLOBAL(__restore_cpu_power7) 
	mfmsr	r3

	rldicl.	r0,r3,4,63

	beqlr

	li	r0,0

	mtspr	SPRN_LPID,r0

	bl	__init_LPCR

	bl	__init_TLB

	mtlr	r11

	blr
@@ -71,3 +77,15 @@ __init_LPCR: 
	mtspr	SPRN_LPCR,r3

	isync

	blr



__init_TLB:

	/* Clear the TLB */

	li	r6,128

	mtctr	r6

	li	r7,0xc00	/* IS field = 0b11 */

	ptesync

2:	tlbiel	r7

	addi	r7,r7,0x1000

	bdnz	2b

	ptesync

1:	blr